Dynamically consistent analysis of Galactic WN4b stars - Revised parameters and insights on Wolf–Rayet mass-loss treatments

Home

All issues

Volume 707 (March 2026)

A&A, 707 (2026) A8

Full HTML

Open Access

Table 1

Selected parameters from the best-fit PoWR^HD models of the six targets in this study.

Parameter^(a)	WR 1	WR 6	WR 7	WR 18	WR 37	WR 58
R_* (R_⊙)	1.076 ± 0.04	${0.730}_{- 0.04}^{+ 0.06}$ $Mathematical equation: $0.730_{-0.04}^{+0.06}$$	0.564 ± 0.08	${1.207}_{- 0.06}^{+ 0.08}$ $Mathematical equation: $1.207_{-0.06}^{+0.08}$$	0.973 ± 0.08	${0.510}_{- 0.08}^{+ 0.09}$ $Mathematical equation: $0.510_{-0.08}^{+0.09}$$
R_crit (R_⊙)	1.101	0.528	0.584	1.234	1.001	0.475
R_τ=2/3 (R_⊙)	3.421	1.987	2.128	5.377	3.880	2.034
T_*^(b) (kK)	140 ± 2.4	143 ± 1.6	145 ± 2.7	140 ± 1.6	143 ± 0.8	144 ± 2.6
T_eff (R_crit) (kK)	138.4	141.0	142.5	138.4	141.0	141.4
T_τ = 2/3} (kK)	78.5	86.7	74.6	66.3	71.6	72.1
log₁₀(L_* (L_⊙))	5.6 ± 0.08	${5.3}_{- 0.08}^{+ 0.12}$ $Mathematical equation: $5.3_{-0.08}^{+0.12}$$	5.1 ± 0.16	${5.7}_{- 0.12}^{+ 0.16}$ $Mathematical equation: $5.7_{-0.12}^{+0.16}$$	5.6 ± 0.16	${5.0}_{- 0.16}^{+ 0.18}$ $Mathematical equation: $5.0_{-0.16}^{+0.18}$$
M_* (M_⊙)	19.6 ± 1.25	10.3 ± 0.27	6.0 ± 0.56	22.3 ± 3.39	14.5 ± 1.28	4.9 ± 0.84
log₁₀ (Ṁ (M_⊙ yr⁻¹))	−4.9 ± 0.06	$- {5.1}_{- 0.06}^{+ 0.09}$ $Mathematical equation: $-5.1_{-0.06}^{+0.09}$$	−5.2 ± 0.12	$- {4.7}_{- 0.09}^{+ 0.12}$ $Mathematical equation: $-4.7_{-0.09}^{+0.12}$$	−4.8 ± 0.12	$- {5.3}_{- 0.12}^{+ 0.14}$ $Mathematical equation: $-5.3_{-0.12}^{+0.14}$$
log₁₀ (Ṁ_t (M_⊙ yr⁻¹))	−3.9 ± 0.12	$- {4.0}_{- 0.12}^{+ 0.18}$ $Mathematical equation: $-4.0_{-0.12}^{+0.18}$$	−4.0 ± 0.24	$- {4.1}_{- 0.18}^{+ 0.24}$ $Mathematical equation: $-4.1_{-0.18}^{+0.24}$$	−4.0 ± 0.24	$- {4.0}_{- 0.24}^{+ 0.28}$ $Mathematical equation: $-4.0_{-0.24}^{+0.28}$$
υ_∞ (km s⁻¹)	2023 ± 288	1759 ± 179	1328 ± 175	1603 ± 216	1788 ± 117	1225 ± 300
$D_{\infty}^{(c)}$ $Mathematical equation: $D_\infty^{(c)}$$	70	50	20	15	20	20

Notes. ^(a)All models have a microturbulent velocity of υ_mic = 30 km s⁻¹. ^(b)The effective temperature at the inner boundary R_*, set at τ_Ross,cont = 20. ^(c)We adopted a depth-dependent clumping law (Hillier et al. 2003) where we used 100 km s⁻¹ as the onset velocity υ_cl (250 km s⁻¹ for WR 58) and where D_∞ represents the clumping when υ >> υ_cl.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.